Daniel j



(No Model.)

D. J. BIKER.

MATRIX. I No 336,824. Patented Feb. 23, 1886.

kmwm m TTTPBEEE? dramas DANIEL J. BIKER, on IMONTO'LAIR, NEW JERSEY, ASSIGNOR r SAMUEL ORUMP, or SAME PLACE.

MATRIX.

SPECIFICATION forming part of Letters Patent No. 336,82d, dated February 23. 1886.

' Application filed July 2, 1884. Serial No. 136,674. (No model.) I

To all whom it may concern.-

Be it known that I, DANIEL J, BIKER, a citizen of the United States, and a resident of Montclair, in the county of Essex and State of New Jersey,have invented certain new and useful Improvements in Matrices, of which the following ,is a specification.

The invention relates to an improved matrix formed of a new composition of matter which I haveinvented, consisting, essentially, of lead, tin, and mercury.

The accompanying drawing illustrates a central vertical longitudinal section of an apparatusor device by means'of which my new matrix may be formed.

A is an original block or plate, which is prepared in the usual manner, and which is inclosed with the flask or walls B. A receptacle having been formed in this way, the new composition in powdered form, lettered O,'is introduced to cover the face of the plate A, when the contents .of the receptacle are subjected to pressure by a plunger, D, thus combining and solidifying the same and forming the matrix.

The composition of which my improved matrix is composed consists of lead or tin and mercury, or of the three combined. I prefer to make use of the. three metals, lead, tin, and mercury,which are brought together as metals are usually combined in the formation of alloys,"

and the resultant compound agitated or triturated until. cooled, whereby a powdered or granulated material results, out of which the matrix is formed.

I have used a material consisting of thirty parts of lead,\five parts of tin, and ,five parts of mercury with very satisfactory results; but

arelativelysimilar result may be accomplished if either lead or tin and mercury are used in difi'erent proportions. The mercury will be used in the proportion of about one part of me alone.

mercury to seven parts of the other metal or metals, more or less, the important consideration being the reduction of the compound or 5 alloy to the form of a powder. The powder having been formed is introduced in a mold or flask to cover the face of the plate A, hereinbefore referred to, when the pressure is applied and the matrix thus formed.

In practice I have been accustomed to use heat, which tends to facilitate the formation of the matrix, although the desired consolidation of the material may be effected bypress- The matrix produced from the said composition in the manner hereinbefore recited may be successfully used for molding almost any known plastic material with exceptionally satisfactory results. When taken from the flask, the matrix will be found to he so nearly perfect that no finishing is necessary, and the impression will be unusually sharp and accurate.

In view of the fact that either lead and tin or lead alone or tin alone may be combined with the mercury, as above set forth, to produce the result sought, I use the term primary metal as designating the material,

whether composed of one or more metallic substances, to be combined with the mercury. V i

What I claim as-my invention, and desire to secure by Letters Patent, is-

A matrix consisting of a compressed compound formed of a primary metal and morcury, substantially as described.

Signed at New York, in the county of New York and State of NewYork, this 27th day of June, AID. 1884.

DANIEL J. BIKER. .Witnesses:'

Grass. 0. GILL, HERMAN Gos'row. 

